class CashFactory{
    public static CashSuper createCashAccept(String type){

        CashSuper cs = null ;
        switch(type){
            case "正常收费":
                cs = new CashNormal();
                break;
            case "满300返100":
                cs = new CashReturn("300", "100");
                break;
            case "打8折":
                cs = new CashRebate("0.8") ;
                break ;
            default:
                break;
        }

        return cs ;
    }
}